This is the part that it's all about. Coachbuilders. Most remaining smal Blitz busses today are post war products. Most German coach builders restarted their businesses after the war with cabriolet's and reliable smal chassis lik the 1.5 ton Blitz.
The smalles ones. Hardly more than a spacious car often for 6 or 8
1.5 ton "standard" busses.
Design busses.